Last updated: August 27, 2025
In Zahuatlan de Morelos (San Jose), Mexico, the average temperature in September is a mild 17°C (63°F), with daytime highs reaching up to 27°C (81°F) and cooler nights dipping to 8°C (47°F). Prepare for an average of 229 mm (9.0 in) of precipitation over 23 days, contributing to a high average humidity of 82%.
In September in Zahuatlan de Morelos (San Jose), the average temperature is 17°C (63°F), with maximums reaching 27°C (81°F) and minimums dropping as low as 8°C (47°F). This moderate climate makes it an ideal destination for travelers seeking pleasant weather and outdoor activities.
In Zahuatlan de Morelos (San Jose) in September, the total precipitation amount is 229 mm (9.0 in), which falls over the course of 23 days.
In Zahuatlan de Morelos (San Jose) in September, humidity is 82%. With an average temperature of 17°C (63°F), this humidity feels like a warm blanket wrapping around you—comfortable yet heavy, making outdoor activities more taxing and requiring frequent breaks for hydration.
In Zahuatlan de Morelos (San Jose) in September, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Zahuatlan de Morelos (San Jose).
UV Risk Categories
Weather in Zahuatlan de Morelos (San Jose) varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Zahuatlan de Morelos (San Jose), focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 13°C (56°F) | 8 mm (0.3 inches) | 84% | very high |
| February Weather | 15°C (59°F) | 6 mm (0.2 inches) | 78% | extreme |
| March Weather | 17°C (62°F) | 20 mm (0.8 inches) | 75% | extreme |
| April Weather | 18°C (64°F) | 53 mm (2.1 inches) | 70% | extreme |
| May Weather | 18°C (65°F) | 118 mm (4.7 inches) | 77% | extreme |
| June Weather | 17°C (63°F) | 213 mm (8.4 inches) | 76% | extreme |
| July Weather | 17°C (62°F) | 145 mm (5.7 inches) | 68% | extreme |
| August Weather | 17°C (63°F) | 185 mm (7.3 inches) | 70% | extreme |
| September Weather | 17°C (63°F) | 229 mm (9.0 inches) | 82% | extreme |
| October Weather | 16°C (62°F) | 88 mm (3.5 inches) | 91% | extreme |
| November Weather | 15°C (59°F) | 21 mm (0.8 inches) | 89% | extreme |
| December Weather | 14°C (57°F) | 5 mm (0.2 inches) | 88% | very high |